The proportion of affected populations who flee violent conflict is much smaller than is widely assumed. Many decide to remain in the conflict zones. They are often referred to as stayees. Three groups can be identified. Some people stay voluntarily. Others do so involuntarily, for example...

Despite the widespread occurrence of humanitarian emergencies such as epidemics, earthquakes, droughts, floods and violent conflict and despite the significant financial resources devoted to humanitarian assistance, systematic learning from such interventions using rigorous theory-based impact...